"D.J. spent the last year leading an administration-wide process formulating the president's infrastructure initiative, which he formally released in February," a White House official told the news outlet in an email. "Now that the plan has been presented and is making its way through Congress, D.J. is planning on moving on to new opportunities."

Larry Kudlow, Trump's new top economic adviser within the White House, praised Gribbin in a statement, as did his predecessor Gary Cohn, who resigned earlier this year following Trump's decision to impose steel and aluminum tariffs.

"D.J. was a key part of the team that turned the president's ambitious vision for rebuilding America's infrastructure into the policy proposal the president released in February," Kudlow said, adding he would "continue to push the president's infrastructure initiative as part of his pro-growth economic agenda."

D.J. Gribbin, a special assistant to the president for infrastructure policy who led the effort to establish President Donald Trump's $200 billion infrastructure initiative, is leaving the White House, according to the Washington Examiner.